Nonlinear Systems and Quadratic Inequalities

x² - 9x - 112 ≥ 0

• -7 < x < 16
• -7 ≤ x ≤ 16
• x < -7 or x > 16
• x ≤ -7 or x ≥ 16

What is the solution set to the inequality 0<x²-4x-5

• x<-1 or x>5
• x<-5 or x>1
• -1<x<5
• -5<x<1

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

What is the solution set to the inequality x² - 4x - 5 > 0

• x < -1 or x > 5
• x < -5 or x > 1
• -1 < x < 5
• -5 < x < 1

What is the solution set to the inequality x² - 4x - 5 > 0

• x < -1 or x > 5

• x < -5 or x > 1

• -1 < x < 5

• -5 < x < 1

6x² - 54 ≤ 0

• -3 ≤ x ≤ 3
• x ≤ -3 or x ≥ 3
• -3 < x < 3
• x < -3 or x > 3

When graphing an inequality, you use an open dot when you use which symbol?

• <, >
• ≤, ≥ 

Tags

CCSS.6.EE.B.8

Which of the following is a solution to the inequality?  
m < 25

• m = 30
• m = 25
• m = − 91
• m = 27

Tags

CCSS.6.EE.B.5

Solve the quadratic inequality

x² - 2x - 8 < 0

• x < -2 or x > 4

• -2 < x < 4

• x < -4 or x > 2

• -4 < x < 2

2x² - 5x - 3 > 0

• x < -1/2 or x > 3

• x < -3 or x > 1/2

• -1/2 < x < 3

• -3 < x < 1/2